showing 36 of ~574560 from 574555 documents
Early-stage thermal performance design of thermo-active walls implemented in underground infrastructures
2022
Abstract Energy geostructures (EGs) represent an innovative technology in the sustainable energy agenda and are useful for satisfying the energy needs of the built environment. They are usually involving geostructures such as piles, walls, tunnels, shafts, and sewers. The application of such technology to infrastructure projects may have considerable thermal potential because of the large surfaces that can be thermally activated. This study focuses on thermo-active walls (energy walls, EWs), which are retaining structures used to sustain the sides of excavations. Key features related to their thermal design are examined, and a design methodology is proposed. The heat-exchange modes involvin…
Building transformative capacity towards active sustainable transport in urban areas – Experiences from local actions in Finland
2022
Recent research has recognised cycling and walking (active transport) as substantial elements contributing to sustainable mobility and public health challenges. There is less knowledge available on the integrated contributions of local-level governance processes and practical implementation of active transport promotion activities. To illustrate comprehensively the contributions of local-level activities, we defined a framework presenting transformative capacity towards active sustainable transport. The framework presents the essential elements and criteria in assessing the level of contributions towards active and sustainable mobility. Previous literature and a case study in six Finnish mu…
Le sfide dell'urbanistica nell'era post-pandemica
2022
Il contributo introduce gli atti del Convegno “Post-pandemic Cities: le sfide dell’urbanistica dopo l’emergenza”, illustrando i contenuti e l'articolazione delle sessioni
15 Minute City Concept. A Glance at the Palermo Case Study
2022
Giving people opportunities for green technology and offering them new transportation modes are not sufficient methods for the transition to a sustainable mobility model. With the increasing importance of time, minimizing the daily travel time of people seems to be one of the crucial steps to be taken. 15 Minute City is one of the latest popular concepts assuring to reduce daily travel time and improve quality of life while enhancing environmental conditions. This paper will have a look at the concept regarding the case study of Palermo, one of the cities with the most intense traffic problems in Europe.
Understanding the EU Urban Agenda from the margins of Europe: the case of Porto
2022
This research focuses on the EU regional policy and presents a critical analysis of its influence on the urban regeneration process in the Portuguese city of Porto. A particular attention was drawn to the city’s historic centre has been facing a diverse range of challenges and been the stage of different urban policies. Among the actions that have been implemented are two area-based interventions linked to the EU Cohesion Policy. The study allowed to put forward a series of consideration regarding the influence of EU initiatives in this southwestern European city and hopefully the insights resulting from it will not only help to understand local effects of EU instruments at the level of imp…
Self-Healing of Redundant FLASH ADCs
2022
For the design of high-speed ADCs, the traditional speed-accuracy trade-off can only be solved at the expense of power consumption. Using fast small transistors takes full advantage of technology scaling but induces large amounts of random variability. Redundancy has been proposed as a way to cope with variability in FLASH converter and open the trade-off. The offset of redundant comparators are measured and only the best candidates which have been selected are powered-up. However, the candidate selection is usually carried out in foreground and a lot of silicon area is thus occupied by comparators that will only be used once, during calibration. In this paper we show how such an approach, …
Association between physical multimorbidity and sleep problems in 46 low- and middle-income countries
2022
BACKGROUND: Little is known about the association between multimorbidity (i.e., two or more chronic conditions) and sleep problems in the general adult populations of low- and middle-income countries (LMICs). Thus, we aimed to assess this association among adults from 46 LMICs, and to quantify the extent to which anxiety, depression, stress, and pain explain this association. METHODS: Cross-sectional, predominantly nationally representative, community-based data from the World Health Survey were analyzed. Nine chronic physical conditions (angina, arthritis, asthma, chronic back pain, diabetes, edentulism, hearing problems, tuberculosis, visual impairment) were assessed. To be included in th…
Principled Governance: Politics to the People
2022
An influential narrative claims that the erosion of the modern nation state is causing a historical shift from «government» to «governance». Society-centred new modes of governance are displacing state-centric tools of government. Shaped by bottom-up pressures, these changes are in the process of engendering a more democratic and functionally differentiated type of agency – the Networked Polity. The paper challenges this narrative. It claims that extant governance networks are merely means for co-opting specific societal actors. For, the societal actors operating within those networks are given much reduced powers than the ones conceded to them in the past by declining neo-corporate arrange…
Joint Subcarrier and Phase Shifts Optimization for RIS-aided Localization-Communication System
2022
Joint localization and communication systems have drawn significant attention due to their high resource utilization. In this paper, we consider a reconfigurable intelligent surface (RIS)-aided simultaneously localization and communication system. We first determine the sum squared position error bound (SPEB) as the localization accuracy metric for the presented localization-communication system. Then, a joint RIS discrete phase shifts design and subcarrier assignment problem is formulated to minimize the SPEB while guaranteeing each user’s achievable data rate requirement. For the presented non-convex mixed-integer problem, we propose an iterative algorithm to obtain a suboptimal solution …
The brighter side of materialism : Managing impressions on social media for higher social capital
2022
Individuals adjust their behavior on social media to varying extent, and commonly in their idealized way. Most studies have focused on the problems associated with materialism and social media use, yet their potential positive contributions remain less clear. In fact, impression management holds potential for both negative and positive: it has been linked with materialistic attitudes, but also increased amounts of self-reported social capital. This study examines how young people's materialistic values connect with status-seeking impression management on social media, and subsequently to social capital, within the same model. Eight hundred Finnish participants aged 15–19 participated in our…
Strange Tools and Dark Materials : Speculating Beyond Narratives with Philosophical Instruments
2022
Although Alva Noë’s Strange Tools: Art and Human Nature (2015) makes no direct reference to Philip Pullman’s His Dark Materials trilogy (1995–2000), these otherwise dissimilar works share an astonishingly similar and current view of the mind: both Noë and Pullman construe cognition as embodied action that extends and reflects on its own possibilities through various instruments and technologies. For Noë, the key technology aiding this reaching of the mind is art; making and engaging with art is a self-reflexive endeavor that makes our activities available for closer examination and evaluation. By extension, works of speculative fiction could be read as illustrations of or investigations int…
Enhanced thermally-activated skyrmion diffusion in synthetic antiferromagnetic systems with tunable effective topological charge
2022
Magnetic skyrmions, topologically-stabilized spin textures that emerge in particular magnetic systems, have attracted attention due to a variety of electromagnetic responses that are governed by the topology. A well-studied effect of topology on the deterministic and drift motion under a nonequilibrium excitation is the so-called skyrmion Hall effect. For stochastic diffusive motion, the effect of topology is expected to have a drastically stronger impact, but the predicted even qualitative impact has not been demonstrated. The required tuning of the topology to achieve zero effective topological charge can be achieved using antiferromagnetic skyrmions. However, the diffusive motion has pre…
La determinazione del Fondo crediti di dubbia esigibilità nel rendiconto della gestione
2022
La determinazione dell’accantonamento al Fondo crediti di dubbia esigibilità in sede di rendiconto non appare di univoca interpretazione, con specifico riferimento alla definizione del quinquennio per il computo delle medie. Esemplificazioni numeriche chiariscono la differente entità dell’accantonamento discendente dalla diversa scelta del quinquennio. Attraverso l’analisi della giurisprudenza contabile e di differenti orientamenti di associazioni di categoria, il lavoro mira a chiarire quale sia, a parere di chi scrive, il più corretto - e anche logico - percorso da seguire, auspicando comunque una revisione del principio contabile applicato della contabilità finanziaria, allegato n. 4/2 a…
ROLE OF ENDOVASCULAR EMBOLIZATION IN THE MULTIDISCIPLINARY MANAGEMENT OF RUPTURED BRAIN ARTERIOVENOUS MALFORMATIONS
2022
Brain arteriovenous malformations (bAVMs) are congenital defects of vasculogenesis, the natural history of which is characterized by a significant morbidity and mortality related to the risk of bleeding. Their management remains challenging, since complete eradication is often difficult. Embolization, surgery, or radiosurgery alone are safe and effective for small unruptured AVMs, while a multidisciplinary approach should be pursued for larger ones. We report a case of intracerebral haemorrhage due to the rupture of a large bAVM, for which a multidisciplinary approach was adopted: endovascular partial embolization followed by complete surgical removal.
In forma polemica, di perpetua lotta. Spazi autogestiti, operaismo, Marx
2022
The volume presented here is the result of an annual work by the Autogestita Power Library and Sapere di Palermo. It is a double “monographic” work that attempts to return to a painting I model some reflections on Italian workerism, on its impact on the social articulation, e finally on some themes deriving from the new critical edition of the works of Marx and Engels.
Digital Education For All: Multi-University Study of Increasing Competent Student Admissions at Scale
2022
An indubitable way to put learning at scale in practice is to implement Massive Open Online Courses, or MOOCs. When a wide-enough portfolio of them is available, new applications arise. For instance, university admissions in Finland, where this study was conducted, have traditionally been based on students' grades in high school studies, an entrance examination, or a combination of both. A minority of students have been accepted through an open university admission path where students can get a study right if they complete enough university course credits with a high enough grade in a given time frame. In this work, we report results from a multi-university project in which the open univers…
Management of pharyngeal collapse in patients affected by moderate obstructive sleep apnoea syndrome
2022
This study reports our experience in a selected cohort of patients affected by mild-moderate OSAS, without tonsillar obstruction, and treated with pharyngoplasty.In a case-control retrospective study, we compared modified expansion sphincter pharyngoplasty (MESP) to modified barbed reposition pharyngoplasty (MBRP) in adult patients with oropharyngeal transversal collapse with a BMI ≤ 30 kg/mWe enrolled 20 patients: 10 treated with MESP and 10 treated with MBRP. Mean apnoea-hypoapnoea index (AHI) was 22.8 (± 5.63). We observed in both groups a significant reduction of AHI and oropharyngeal obstruction (p = 0.01), with a success rate, according with Sher's criteria, of 90% for MESP and 80% fo…
Progettazione e valutazione inclusiva con gli EAS Metodologie, ricerche e strumenti
2022
Il testo affronta il tema della didattica inclusiva per Episodi di Apprendimento Situato (EAS), dispositivo metodologico in grado di professionalizzare le pratiche degli insegnanti e rendere gli allievi centro dei loro apprendimenti. A partire da una prima parte metodologico-applicativa, il lavoro è integrato da una sperimentazione condotta in due contesti inclusivi differenti: le scuole speciali in Spagna (CEE) e la scuola ordinaria italiana. In entrambi i contesti, al termine del percorso di sperimentazione, si è evidenziato un miglioramento auto-percepito delle competenze metodologiche e digitali possedute dagli insegnanti.
A review on discrete diversity and dispersion maximization from an OR perspective
2022
Abstract The problem of maximizing diversity or dispersion deals with selecting a subset of elements from a given set in such a way that the distance among the selected elements is maximized. The definition of distance between elements is customized to specific applications, and the way that the overall diversity of the selected elements is computed results in different mathematical models. Maximizing diversity by means of combinatorial optimization models has gained prominence in Operations Research (OR) over the last two decades, and constitutes nowadays an important area. In this paper, we review the milestones in the development of this area, starting in the late eighties when the first…
Giuseppe Fanciulli maestro di letteratura per l’infanzia (1888-1951)
2022
Giuseppe Fanciulli can be considered a "deuteragonist" of children’s literature, since his literal and theatrical compositions have lost their importance over the years and only rarely were cited by his experts. The following contribution therefore intends to analyze the Fanciulli’s life and literary production, to reconstruct a complex and original literary itinerary, expression of creativity, of ingenuity and of a sincere love for the childhood, as well as manifestation of the desire to combine the literature with the education, accompanying the new generations towards a path of intellectual, ethical and moral growth. Giuseppe Fanciulli; literature; childhood; education; Twentieth century.
Shaping blockchain-based innovation strategies in the wine sector: a conceptual framework
2022
The growing demand for transparency along the supply chain, partly related to recent incidents involving food contaminations and food frauds, has led businesses to reinterpret their business models by adopting strategies aimed to ensure an effective traceability system. In this scenario, emerging technologies play a decisive role by allowing for constant monitoring of data and information in the various phases of the supply chain. The aim of this study is to explore and analyze the main opportunities related to the BCT implementation in the wine industry and to identify the most important drivers and barriers of innovation, by using a case study approach. The case study of the Costaflores w…
Information Technology–Supported value Co-Creation and Co-Destruction via social interaction and resource integration in service systems
2022
The paper develops a conceptual framework to study the constructs of information technology (IT)-supported value co-creation and co-destruction through shared processes of social interaction and resource integration as mediated by IT and embedded in interactive value formation practices. In particular, the elements of social interaction and resource integration are identified, and the role of IT is discussed. We conduct a systematic literature review and analyze the data using the service system perspective. Our research contributes by identifying the constructs of value-creating phenomena enabled by IT from the service system perspective and presenting a research agenda for further studies…
Adjusting Barcelona Clinic Liver Cancer Staging System to the Evolving Landscape of Hepatocellular Carcinoma: A Look to the Future
2022
No abstract available
Forward rapidity J/ψ production as a function of charged-particle multiplicity in pp collisions at √s = 5.02 and 13 TeV
2022
The production of J/ψ is measured as a function of charged-particle multiplicity at forward rapidity in proton-proton (pp) collisions at center-of-mass energies s = 5.02 and 13 TeV. The J/ψ mesons are reconstructed via their decay into dimuons in the rapidity interval (2.5 < y < 4.0), whereas the charged-particle multiplicity density (dNch/dη) is measured at midrapidity (|η| < 1). The production rate as a function of multiplicity is reported as the ratio of the yield in a given multiplicity interval to the multiplicity-integrated one. This observable shows a linear increase with charged-particle multiplicity normalized to the corresponding average value for inelastic events (dNch/dη/〈dNch/d…
The NEXT Project: Towards Production and Investigation of Neutron-Rich Heavy Nuclides
2022
The heaviest actinide elements are only accessible in accelerator-based experiments on a one-atom-at-a-time level. Usually, fusion–evaporation reactions are applied to reach these elements. However, access to the neutron-rich isotopes is limited. An alternative reaction mechanism to fusion–evaporation is multinucleon transfer, which features higher cross-sections. The main drawback of this technique is the wide angular distribution of the transfer products, which makes it challenging to catch and prepare them for precision measurements. To overcome this obstacle, we are building the NEXT experiment: a solenoid magnet is used to separate the different transfer products and to focus those of …
Coastal high-frequency radars in the Mediterranean – Part 1: Status of operations and a framework for future development
2022
Due to the semi-enclosed nature of the Mediterranean Sea, natural disasters and anthropogenic activities impose stronger pressures on its coastal ecosystems than in any other sea of the world. With the aim of responding adequately to science priorities and societal challenges, littoral waters must be effectively monitored with high-frequency radar (HFR) systems. This land-based remote sensing technology can provide, in near-real time, fine-resolution maps of the surface circulation over broad coastal areas, along with reliable directional wave and wind information. The main goal of this work is to showcase the current status of the Mediterranean HFR network and the future roadmap for orches…
Categorizing the Role of Respiration in Cardiovascular and Cerebrovascular Variability Interactions
2022
Objective: Respiration disturbs cardiovascular and cerebrovascular controls but its role is not fully elucidated. Methods: Respiration can be classified as a confounder if its observation reduces the strength of the causal relationship from source to target. Respiration is a suppressor if the opposite situation holds. We prove that a confounding/suppression (C/S) test can be accomplished by evaluating the sign of net redundancy/synergy balance in the predictability framework based on multivariate autoregressive modelling. In addition, we suggest that, under the hypothesis of Gaussian processes, the C/S test can be given in the transfer entropy decomposition framework as well. Experimental p…
Centri minori fra modelli nuovi o ritrovati. Le alte Madonie tra opportunità e suggestioni
2022
«Un’architettura basata sulla complessità e sulla contraddizione richiede un impegno speciale verso l’insieme: la sua reale validità deve essere nella sua totalità, o nelle sue implicazioni di totalità» afferma Robert Venturi (Venturi, 2005, p. 16). Questo suggerimento è ancora essenziale per tutti coloro che intendono affrontare da vicino il ruolo del progetto nel territorio dei Centri minori? Sigfried Giedion, nel suo Space, Time and Architecture leggeva l’edificio per l’abitante della città. Aveva voglia di «godersi il panorama, le brezze ed il sole, godere in tutta calma quella naturale libertà di cui il suo lavoro lo privava» (Giedion, 1953, p. 505). A distanza di molti anni, il nostro…
Making Space for Creativity : Niche Construction and the Artist’s Studio
2022
Abstract It is increasingly acknowledged that creativity cannot be fully understood without considering the setting where it takes place. Building on this premise, we use the concepts of niche construction, scaffolding, coupling, and functional integration to expound on the environmentally situated nature of painters’ studio work. Our analysis shows studios to be multi-resource niches that are customized by artists to support various capacities, states, and actions crucial to painting. When at work in these personalized spaces, painters do not need to rely solely on their “inner” powers of imagination, memory, decision making, and technique to execute their paintings. Instead, with the help…
Civil Wastewater Remediation through Employment of Indigenous Microalgae and Sewage Sludge
2022
Microalgae are photosynthetic microorganisms that can employ some inorganic pollutant compounds as nutrients, for example nitrates and phosphates. Traditional wastewater treatment comprises oxidation ponds in which the Activated Sludge performs the oxidation of the organic matter. Microalgae may be well applied in these processes. In this work, we tested the potential of remediation of a mixture of a local microalga, Chlorella sp. Pozzillo, and activated sludge and compared it to controls of only microalga and only activated sludge. We found that the mixture of bacteria and microalgae leads to an improvement in nitrogen removal up to the 83,68%, while phosphorous removal is improved when th…
Lo sviluppo economico è/e lo sviluppo della qualità: un parco dell'innovazione a Catania
2022
Il tema delle periferie produttive (o ex produttive) negli ultimi anni ha assunto un ruolo predominante nella pianificazione delle città al fine di rivalutare le aree industriali dismesse come serbatoi per la riqualificazione urbana ed economica delle nostre città. Sicurezza, degrado sociale e ambientale, abbandono, consumo di suolo sono le principali problematiche di queste aree e investire nella loro riqualificazione può essere un’occasione centrale per la “ripartenza” economica delle nostre città. Per tale motivo, la Regione Siciliana ha recentemente designato una vasta area della città di Catania come “Zona Economica Speciale” (ZES) per il rilancio delle filiere economiche della città. …
La mia casa è il mio Paradiso. Note su alcuni racconti di Aḥmad Bašīr al-'Ayla
2022
Aḥmad Bašīr al-'Ayla is one of the most prolific and versatile author of Contemporary Palestinian literary landscape. Although he is probably best known for his long poetic career, he is also a journalist, a novelist, a script editor, a radio producer and a short story writer. In 2016 he published his first collection of short stories entitled Al-ḥabl allaḏī tadallā min al-samā’ (The rope hanging from the sky). The stories included in this work are mainly set in Bengazi, which is the city where the author lives since he was a child, and they focus on the tragedy of war and its disasters, first of all the loss and distruction of houses and buildings. In such a tragic context the concept of “…
Evaluation of radiation stability of electron beam irradiated Nafion® and sulfonated poly(ether ether ketone) membranes
2022
Proton exchange membranes (PEM), which have been commonly used in fuel cells have raised interest for the application in harsh environments involving ionizing radiation. Therefore, radiation stability and ability to sustain their functionality under the radiation environment are of great interest. Within this study, electron beam irradiation in dose range from 50 to 500kGy was used to evaluate the effects of radiation on the physico-chemical and mechanical properties of two types of PEM: commercial Nafion®117 and sulfonated poly(ether-ether-ketone) (SPEEK) with high degree of sulfonation (DS = 0.75±0.5). SPEEK membrane presented higher mechanical and thermal stability compared to that of Na…
AEROBIC 1,2-DICHLOROETHANE DEGRADERS IN CONTAMINATED GROUNDWATER
2022
Spazi aperti di comunità in ambito climatico Mediterraneo. Il caso di Hassan Fathy in Egitto
2022
The complexity of the relationship between architecture and the Mediterranean climate, in energy regimes and resource scarcity, requires special attention. Specifically, the article aims to explore how community spaces can become design subjects, intervening in climatic, environmental, social, and cultural features. Hassan Fathy’s architecture, in particular the two schools in New Gourna and Fares, offer a different key to understanding man, climate, culture, technology, and education. A relationship that is still evolving today, calling architecture back toits educational and social focus.
Latvijas Universitātes Astronomiskās observatorijas 20. gadsimta 20. un 30. gadu pulksteņu fotogrāfijas Latvijas Universitātes Muzeja krājumā
2022
Latvijas Universitātes Muzeja F. Candera un Latvijas astronomijas kolekcijas krājumā atrodas 32 LU Astronomiskās observatorijas pulksteņu fotogrāfijas, kas uzņemtas uz fotoplatēm 20. gadsimta 20. un 30. gados). 2018. gadā tās digitalizētas projektā, kuru īstenoja Latvijas Nacionālā bibliotēka kopā ar sadarbības partneriem. 1922. gada Latvijas Universitātē tika nodibināta Astronomiskā observatorija, kurā sāka veidot laika dienestu, kas bija nepieciešams mācību nolūkiem un valsts vajadzībām. Dažu gadu laikā iegādājās vairākus ļoti precīzus pulksteņus, kas redzami attēlos. Tekstā paskaidrots, kā pulksteņus izmantoja. 1925. gadā laika dienests sāka pilnvērtīgi funkcionēt, precīzā laika signālus…